ApostropheCMS import-export tar guard misses './..' because it is a literal '../' substring test

[ Description ]Official description

ApostropheCMS is an open-source Node.js content management system. Prior to 3.7.0 of the import-export module, an authenticated importer can submit a tar entry whose normalized destination targets a directory while bypassing the literal parent-path substring guard. Opening that directory as a write stream emits an unhandled filesystem error that can terminate the Node.js process; the source establishes this static primitive but not an end-to-end exploit or controlled arbitrary file read or write. This issue is fixed in version 3.7.0.

[ Fixes ]Fixes and patches

• @apostrophecms/import-export 3.7.0Fixed version · GitHub Advisories · npm package @apostrophecms/import-export: upgrade to 3.7.0 or later (affected < 3.7.0)

[ Packages ]Affected open-source packages

• @apostrophecms/import-export npmAffected < 3.7.0 · fixed in 3.7.0 · GHSA-97wv-p4xx-c7mg

[ References ]References

• github.com/apostrophecms/apostrophe/commit/9500b8b0e1d630d5e07fbb5fd2c25ed0943845ce
• github.com/apostrophecms/apostrophe/commit/f84fd41cbf6c22eb8d0008fc9c25df1f7130b350
• github.com/apostrophecms/apostrophe/releases/tag/@apostrophecms/import-export@3.7.0
• github.com/apostrophecms/apostrophe/security/advisories/GHSA-97wv-p4xx-c7mg